9

Flat 5K runs in September 2026

Find flat 5k runs near me in September 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

Filter by place

Filter by date

Filter by category

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

Enjoy every spellbinding step of a 5K through the stunning landscape of Rye Harbour Nature Reserve in this exceptional summer series. Enter one or enter more and watch your times improve.
  • Fri 4 Sep
  • £16
Rye, East Sussex, UK

Rye Summer 5K Series | Race Five | 5K

Enjoy every spellbinding step of a 5K through the stunning landscape of Rye Harbour Nature Reserve in this exceptional summer series. Enter one or enter more and watch your times improve.

  • 5 km road running
  • Chip timing
  • Enter online
  • Flat
  • Age 11 & over
More than just a running race. Join thousands at Bedfordshire’s most popular weekend of running with festival magic, live music, bar, yoga, kids zone, street food, outdoor cinema and fun fair!
  • Sat 5 Sep
  • £19-£21
Bedford, Bedfordshire, UK

Bedford 5K

More than just a running race. Join thousands at Bedfordshire’s most popular weekend of running with festival magic, live music, bar, yoga, kids zone, street food, outdoor cinema and fun fair!

  • 5 km road running + 33 ft ascent
  • Chip timing
  • Enter online
  • Flat
  • Traffic free
  • Age 11 & over
The AJ Bell Great North 5K is the curtain-raiser event for the North East’s biggest weekend of sport! It’s a fun, flat 5k dash around Newcastle and Gateshead’s vibrant Quayside.
  • Fri 11 Sep
  • £27-£30
Newcastle upon Tyne, Tyne and Wear, UK

AJ Bell Great North 5K

The AJ Bell Great North 5K is the curtain-raiser event for the North East’s biggest weekend of sport! It’s a fun, flat 5k dash around Newcastle and Gateshead’s vibrant Quayside.

  • 5 km road running
  • Families
  • Beginner-friendly
  • Entertainment
  • Music
  • Enter online
  • Flat
  • PB
  • Traffic free
  • Event village
  • Age 11 & over
The challenge is back on! Who will reign supreme - City or Wharf? It's time to get competitive and bring the victory to your team.
  • Thu 17 Sep
  • £25-£30
London, UK

The City v Wharf Run Challenge | 5K

The challenge is back on! Who will reign supreme - City or Wharf? It's time to get competitive and bring the victory to your team.

  • 5 km road running
  • Chip timing
  • Enter online
  • Flat
  • Age 11 & over
Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.
  • Sun 27 Sep
  • £37.50-£39.50
Bournemouth, Dorset, UK

SoBo Series | Volume 4 | Stop me (if you think you've heard this one before)

Set along the beachfront promenade at Southbourne (SoBo), choose your own distance from 5K to ultra, along this flat, tarmacked, lapped route suitable for all abilities.

  • 7 hrs road running
  • Beginner-friendly
  • Enter online
  • Flat
  • Traffic free
  • Event village
  • Coast
  • Public transport links
  • Age 18 & over
This welcoming 5K for runners of all abilities follows a flat route by the scenic River Ness, as part of the awe-inspiring Loch Ness Marathon festival weekend.
  • Sun 27 Sep
  • £18
Inverness, Highland, UK

River Ness 5K

This welcoming 5K for runners of all abilities follows a flat route by the scenic River Ness, as part of the awe-inspiring Loch Ness Marathon festival weekend.

  • 5 km road running
  • Enter online
  • Flat
  • Traffic free
  • Age 1 & over
  • Sun 13 Sep
  • £20
Langport, Somerset, UK

Naked | Clothes-free run | Naked 5K

  • 5 km multi terrain running
  • Sun 13 Sep
  • £16-£38
Brockenhurst, Hampshire, UK

The Garmin New Forest Marathon | 5K

  • 5 km multi terrain running + 50 ft ascent
  • Sun 27 Sep
  • £15-£18
Exmouth, Devon, UK

Bradleys Exmouth 5K & 10K - Autumn | 5K

  • 5 km road running

Other UK events

Search options

Back to search options
4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.